10 SUPPLEMENT TO GREAT OOLITE MOLLUSCA. 



Geological Position and Locality, The Great Oolite of Minchinhampton, collected by 

 Mr. Witchell. 



CERITHIUM? WITCHELLI, Lye. Tab. XLIV, fig. 7. 



Testa minuta subcylindrica, elongata, anfractibus (5 6) subconvexis altis, suturis valde 

 impressis, costis (circa 15) depresses subrectis, auperne distinctis, in/erne evanescentibus 

 apcrtura ovata, labro externo simplici. 



Shell minute, subcylindrical, lengthened ; volutions (5 6) high, rather convex, the 

 sutures depressed and strongly defined ; costae (about 15 to a volution) depressed, distinct 

 at the upper and vanishing towards the lower part of each volution ; the aperture is of 

 moderate size, ovate, the lips rather thickened. 



The breadth of each volution is about one third more than its height ; the costse are 

 only faintly marked ; there are no traces of encircling striations or tubercles. 



Geological Position and Locality. The Great Oolite of Minchinhampton, communi- 

 cated by E. Witchell, Esq. 



CERITHIUM ? PCLCHRUM, Lye. Tab. XLIV, fig. 4. 



Testa parva, crassa, turrito-subulata, anfractibus (8) convexis, suturis valde impressis, 

 costis transversis, obliquis, magnis (circa 12 in ambitu), lineis longitudinalibus decussatis, 

 apertura parva ovata, canali nullo. 



Shell small, thick, elongately turreted ; volutions 8, convex, the sutures deeply im- 

 pressed ; transverse costae about 12 to each volution, oblique, large, decussated, and 

 rendered nodulous by six narrow encircling lines ; aperture ovate, rather contracted ; no 

 canal. 



Allied to Cerilhium costellatum, Desh., from which it differs in having fewer volutions, 

 and in possessing encircling lines. C. bulimoides, Desh., with a similar general figure, has 

 the costae smaller, fewer, and perpendicular. 



Geological Position and Locality. The Great Oolite of Minchinhampton Common, 

 collected by Mr. Witchell. 



NERIN^A GRANULATA, Phil., sp. Tab. XXXI, figs. 12, 12 a. 



TEREBRA GRANCLATA, Phil. Geol. York., i, pi. 7, fig. 16, p. 173. 

 CERITHIUM GRANULATUM, Mor. Cat. Brit. FOBS., 1854, p. 240. 



Testa subulato-turrita, anfractibus numerosis angmtalis, planis, sed inferne subconcavis, 



